Add missing documentation

Author: fuzzybinary

features/dd-sdk-android-rum/src/main/kotlin/com/datadog/android/rum/RumAttributes.kt

@@ -302,4 +302,6 @@ object RumAttributes {
      * on the next view.
      */
     const val CUSTOM_INV_VALUE = "_dd.view.custom_inv_value"
+
+    // endregion
 }

features/dd-sdk-android-rum/src/main/kotlin/com/datadog/android/rum/RumConfiguration.kt

@@ -275,7 +275,8 @@ data class RumConfiguration internal constructor(
          * Sets a custom identifier for the last interaction in the previous view used to compute the time from
          * the last interaction to the next view metric.
          * By default, the SDK uses a [TimeBasedInteractionIdentifier] with a threshold of 3000ms.
-         * @param lastInteractionIdentifier the [LastInteractionIdentifier] to use.
+         * @param lastInteractionIdentifier the [LastInteractionIdentifier] to use. Setting this property to
+         * null will disable the Interaction to Next View metric..
          */
         fun setLastInteractionIdentifier(lastInteractionIdentifier: LastInteractionIdentifier?): Builder {
             rumConfig = rumConfig.copy(lastInteractionIdentifier = lastInteractionIdentifier)